mpi.cart.coords: MPI_Cart_coords

In Rmpi: Interface (Wrapper) to MPI (Message-Passing Interface)

MPI_Cart_coords

Description

mpi.cart.coords translates a rank to its Cartesian topology coordinate.

Usage

mpi.cart.coords(comm=3, rank, maxdims)

Arguments

comm	Communicator with Cartesian structure
rank	rank of a process within group
maxdims	length of vector coord in the calling program

Details

This function is the rank-to-coordinates translator. It is the inverse map of mpi.cart.rank. maxdims is at least as big as ndims as returned by mpi.cartdim.get.

Value

mpi.cart.coords returns an integer array containing the Cartesian coordinates of specified process.

Author(s)

Alek Hunchak and Hao Yu

References

https://www.open-mpi.org/

See Also

mpi.cart.rank

Examples

#Need at least 9 slaves
#mpi.bcast.cmd(mpi.cart.create(1,c(3,3),c(F,T)))
#mpi.cart.create(1,c(3,3),c(F,T))
#mpi.cart.coords(3,4,2)

Rmpi documentation built on April 1, 2023, 12:20 a.m.